authoritative Synonyms

definitive authorized important sounder solid sanctioned royal responsible reliable regnant textual sovran standard statesmanlike statutory strong suasive superseding supervisory telling recognized puissant proper officially orthodox orthodoxical overbearing overruling peremptory persuasive potent powerful preceptive precise prepollent prepotent prescript prescriptive presiding prestigious official triumphal white-collar boy scout high-tension callable motivational uncontroversial validated of record